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Hello, first post of an EA newcomer, and actually forex newb altogether.

To the chase, how do I create a condition that compares Close against Open for a certain amount of pips difference. For now I see only general comparison operators (higher than, lower/equal than, etc.), while what I need is say, check for 20 pips difference.

Thanks in advance.
R

You can:
1 create it in the mql icon
2 or as an indicator in the indicator builder and then import it into the builder

In the mql icon use the indicator button and insert it
you can create soemthing like open - close > 0.0005 for 5 pips for EURUSD. Make sure you know how to manage the + or - since sometimes open>close or close>open. Maybe you need to use an absolute number. So do MathAbs(equation)>0.0005

Thanks, this was very helpful, now I can do what I wanted to!

But tell me, isn't 0.00001 a pip? It goes all the way to 5 digits off the dot in MT4
Please advise. Thanks

It really depends on the pair (i.e. JPY has less digits)
For EURUSD (and most pairs) 0.00001 is a fractional pip or pipette, and 0.0001 is a pip
You should take this free course http://www.babypips.com/school/pips-and-pipettes.html - it's really good if you are new to forex